Pen



FIG. 1 is a typical side elevational view of a pen showing my newdesign, all other sides being identical thereto;

FIG. 2 is a side elevational view with the cap member removed forpurposes of illustration;

FIG. 3 is a bottom end view of FIG. 2;

FIG. 4 is a bottom end view of FIG. 1; and,

FIG. 5 is a top end view of FIGS. 1 and 2.

The ornamental design for a pen, as shown and described.